Merge pull request #175 from georust/dependabot/cargo/ndarray-0.15

Update ndarray requirement from 0.14 to 0.15

Author: jdroenner

Cargo.toml

@@ -21,7 +21,7 @@ thiserror = "1.0"
 libc = "0.2"
 geo-types = { version = "0.7.0" }
 gdal-sys = { path = "gdal-sys", version = "^0.3"}
-ndarray = {version = "0.14", optional = true }
+ndarray = {version = "0.15", optional = true }
 chrono = { version = "0.4", optional = true }
 bitflags = "1.2"